At the end of the day, homework is for you, not your teacher. Using resources like Lvov/Lvova answer keys is a tool, not a solution. Use them to verify your knowledge, not to replace it!
Since you also asked for a , I’ve written one that explores the "GDZ culture"—the pros and cons of using answer keys. The Homework Dilemma: Is Using GDZ "Cheating" or Learning? spisat s gdz russkii.lvov lvova dlia 6 klassa
The biggest danger of GDZ is the "copy-paste" habit. When you simply rewrite what you see on the screen, your brain goes on autopilot. You might get a high grade on the homework, but when the test comes and there is no phone to help, that’s when the trouble starts. Vocabulary and grammar rules are like muscles—if you don't exercise them, they stay weak. How to Use GDZ Like a Pro At the end of the day, homework is for you, not your teacher